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Full-Text Articles in Physics
Ion-Beam Analysis Of Artificial Turf, Morgan Clark
Ion-Beam Analysis Of Artificial Turf, Morgan Clark
Honors Theses
There have been considerable concerns in recent years that artificial turf used in many playing fields around the world may be unsafe. While the presence of heavy metals and carcinogenic chemicals have been reported in a number of studies more data and research are needed to determine if there is a real link between artificial turf and adverse health effects. We performed PIXE and PIGE analysis of artificial turf blade and infill samples to search for heavy metals and other possibly toxic substances. The samples were bombarded with proton beams from the 1.1-MV Pelletron tandem accelerator in the Union College …
Colliding Wind Binaries With Orbital Motion: Line Wind Formulation, Brendan O'Connor
Colliding Wind Binaries With Orbital Motion: Line Wind Formulation, Brendan O'Connor
Honors Theses
Stars lose mass in the form of supersonic winds. In a binary star system, these winds collide to produce shockwaves. Such stellar wind collisions are observed in many binary star systems. Due to the orbital motion of the system, a trailing spiral structure is produced. We present a solution method in the co- rotating frame of the stars, which allow us to consider steady state solutions. This requires the inclusion of Coriolis and centrifugal forces, including their effects on the pre-shock winds, for which we were restricted to orbital speed slower than wind speeds. We assume efficient post-shock cooling, which …
Epoch, Latitude And Star Positions From Hipparchus’ Commentary, Irene Vargas-Salazar
Epoch, Latitude And Star Positions From Hipparchus’ Commentary, Irene Vargas-Salazar
Honors Theses
No abstract provided.
Type 1a Supernova Models And Galactic Chemical Evolution, Spencer Henning
Type 1a Supernova Models And Galactic Chemical Evolution, Spencer Henning
Honors Theses
Multiple models of type Ia supernovae are discussed, as well as the properties of white dwarf formation, electron degeneracy pressure, nucleosynthesis, and galactic chemical evolution (GCE). A GCE computer model is used to produce nuclear abundance data corresponding to Chandra (W7) and sub-Chandra (WDD2) type Ia supernovae models for Ca, Sc, Ti, V, Cr, and Mn nuclei. Overall, a trend was found indicating that the WDD2 model had greater [x/Fe] abundance values than the W7 model at the end time of the model. Additionally, each model fit within total observed data, but observed data filtered to highlight white dwarf stars …
Study Of The Neutron Detection Efficiency Of The Clas12 Detector, Keegan Sherman
Study Of The Neutron Detection Efficiency Of The Clas12 Detector, Keegan Sherman
Honors Theses
One of the central physics goals of Jefferson Lab is to understand how quarks and gluons form nuclei. The 12 GeV upgrade is nearing completion and a new detector, CLAS12, is being built in Hall B. One of the approved experiments will measure the magnetic form factor of the neutron (Gn ). To make this measurement, the ratio of electron-neutron (e-n) to electron-proton (e-p) scattering events will be extracted from deuterium in quasi-elastic kinematics. A major source of systematic uncertainty is the neutron detection efficiency (NDE) of CLAS12. To better understand the NDE I used the Monte Carlo …
Holographic Scaling In Newtonian Gravity, Emma Machado
Holographic Scaling In Newtonian Gravity, Emma Machado
Honors Theses
Many high school and college students are required to take physics, but few actually learn to discover the mysteries of the field, because they are too busy trying to memorize equations and solve "plug and chug" style problems. Looking into the calculations and equations of physics, a holography can be seen within the subject. This holography can be discovered and made accessible to general physics students, by studying the duality that exists between Electricity and Gravity. Furthermore, the concept of mass in physics (MADM) can be calculated, within this holography, for various black holes along with the …
Measurement Of The Verdet Constant For A Previously Uncharacterized Fused Quartz Glass, Samyukta Krishnamurthy
Measurement Of The Verdet Constant For A Previously Uncharacterized Fused Quartz Glass, Samyukta Krishnamurthy
Honors Theses
The objective of this experiment is to measure and analyze the Verdet constant for Corning 7980, a fused quartz glass with no previously published Verdet constant data. This quartz glass is being used at the Belle II experiment at Tsukuba, Japan. The Verdet constant is measured using the Faraday effect — a magneto-optical phenomenon that describes the rotation of the plane of polarization of light within a medium in the presence of an external magnetic field. This experiment quantifies the rotation of the plane of polarization with respect to the wavelength and the magnetic field. Data collected through this experiment …
Stacking Atomically Thin Materials, Hamilton Johnson
Stacking Atomically Thin Materials, Hamilton Johnson
Honors Theses
Atomically thin materials have been an exciting topic of research since graphene was first isolated in 2004. Due to their unique properties, a large amount of research has gone into these materials, but better methods of combining them are still being sought. We present three methods which were attempted for fabricating stacks of atomically thin (or 2D) materials without heating them to the high temperatures required by previous techniques. The first two methods were deemed unsuitable for various reasons, but the third was used to successfully create a stack of hexagonal boron nitride (hBN) encapsulated molybdenum disulfide (MoS2). While the …